Star amethyst is what is known as asteriated Amethyst, which refers to a kind of quartz that displays a rather particular optical property called an asterism. The reflection on the surface of the stone of a point light source, such as a single lamp or sunlight in the form of a star, forms this phenomenon. To bring out the star-like pattern, star amethyst is generally polished in a cabochon style and habitually contains micro inclusion of another mineral within the Amethyst. The most frequently reported color of star amethyst is purple, but shades of pink and reddish-brown are also found. Thus, due to this specific optical feature in combination with the elegant looks of Amethyst.